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From: Lucas Stach <l.stach@pengutronix.de>
To: Shawn Guo <shawnguo@kernel.org>
Cc: devicetree@vger.kernel.org, Fabio Estevam <festevam@gmail.com>,
	kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org,
	patchwork-lst@pengutronix.de
Subject: [PATCH 07/10] arm64: dts: zii-ultra: fix i2c pin configuration
Date: Mon, 25 Jan 2021 19:47:33 +0100
Message-ID: <20210125184736.1226435-7-l.stach@pengutronix.de> (raw)
In-Reply-To: <20210125184736.1226435-1-l.stach@pengutronix.de>

Reduce slew rate and set drive strength to 105 Ohm. The previous settings
had some issues with signal ringing, due to the slew rate being too fast.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
 .../boot/dts/freescale/imx8mq-zii-ultra.dtsi     | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi
index e6469e15bcbd..aa05d5fd1b3b 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi
@@ -661,29 +661,29 @@
 
 	pinctrl_i2c1: i2c1grp {
 		fsl,pins = <
-			MX8MQ_IOMUXC_I2C1_SCL_I2C1_SCL			0x4000007f
-			MX8MQ_IOMUXC_I2C1_SDA_I2C1_SDA			0x4000007f
+			MX8MQ_IOMUXC_I2C1_SCL_I2C1_SCL			0x40000022
+			MX8MQ_IOMUXC_I2C1_SDA_I2C1_SDA			0x400000a2
 		>;
 	};
 
 	pinctrl_i2c2: i2c2grp {
 		fsl,pins = <
-			MX8MQ_IOMUXC_I2C2_SCL_I2C2_SCL			0x4000007f
-			MX8MQ_IOMUXC_I2C2_SDA_I2C2_SDA			0x4000007f
+			MX8MQ_IOMUXC_I2C2_SCL_I2C2_SCL			0x40000022
+			MX8MQ_IOMUXC_I2C2_SDA_I2C2_SDA			0x400000a2
 		>;
 	};
 
 	pinctrl_i2c3: i2c3grp {
 		fsl,pins = <
-			MX8MQ_IOMUXC_I2C3_SCL_I2C3_SCL			0x4000007f
-			MX8MQ_IOMUXC_I2C3_SDA_I2C3_SDA			0x4000007f
+			MX8MQ_IOMUXC_I2C3_SCL_I2C3_SCL			0x40000022
+			MX8MQ_IOMUXC_I2C3_SDA_I2C3_SDA			0x400000a2
 		>;
 	};
 
 	pinctrl_i2c4: i2c4grp {
 		fsl,pins = <
-			MX8MQ_IOMUXC_I2C4_SCL_I2C4_SCL			0x4000007f
-			MX8MQ_IOMUXC_I2C4_SDA_I2C4_SDA			0x4000007f
+			MX8MQ_IOMUXC_I2C4_SCL_I2C4_SCL			0x40000022
+			MX8MQ_IOMUXC_I2C4_SDA_I2C4_SDA			0x400000a2
 		>;
 	};
 
-- 
2.20.1


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Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-25 18:47 [PATCH 01/10] ARM: dts: imx6: rdu2: enable WDOG1 Lucas Stach
2021-01-25 18:47 ` [PATCH 02/10] ARM: dts: imx6: RDU2: reduce i2c drive-strength Lucas Stach
2021-01-25 18:47 ` [PATCH 03/10] ARM: dts: imx6: RDU2: enable RMI4 reduced reporting Lucas Stach
2021-01-25 18:47 ` [PATCH 04/10] ARM: dts: imx6: RDU2: only trigger IRQ on falling edge ucs1002 ALERT pin Lucas Stach
2021-01-25 18:47 ` [PATCH 05/10] ARM: dts: imx6: RDU2: adjust audio devices nomenclature Lucas Stach
2021-01-25 18:47 ` [PATCH 06/10] arm64: dts: zii-ultra: add sound support Lucas Stach
2021-01-25 18:47 ` Lucas Stach [this message]
2021-01-25 18:47 ` [PATCH 08/10] arm64: dts: zii-ultra: limit USB ports to USB2 speed Lucas Stach
2021-01-25 18:47 ` [PATCH 09/10] arm64: dts: zii-ultra: only trigger IRQ on falling edge ucs1002 ALERT pin Lucas Stach
2021-01-25 18:47 ` [PATCH 10/10] arm64: dts: zii-rmb3: enable RMI4 reduced reporting Lucas Stach
2021-01-30 13:55 ` [PATCH 01/10] ARM: dts: imx6: rdu2: enable WDOG1 Shawn Guo

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